反はん発ぱつ係けい数すう

noun

coefficient of restitution

Physics term for the ratio of relative speed after collision to relative speed before collision. Used in mechanics and material science.

• 反はん発ぱつ係けい数すうが1に近ちかいほど、衝しょう突とつ前ぜん後ごの運うん動どうエネルギーの損そん失しつが少すくない。

  The closer the coefficient of restitution is to 1, the smaller the loss of kinetic energy before and after the collision.